Question

Sit in the chair and put your arms out.

Lift your feet off the floor
Now twist your torso quickly in one direction.
Keep doing this movement to spin around 360 degrees.

What law of motion is this?

Answer 1

If you're initially rotating with your arms outstretched, then when you draw your arms inward, your moment of inertia decreases. This means that your angular velocity must increase, and you spin faster.

Step-by-step explanation: